package top.lishuoboy.cloud.gateway.gateway9527.filter;

import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.util.Date;


/**
 * 73_GateWay的Filter。详见笔记
 * 能干什么：
 *
 * 全局日志记录
 * 统一网关鉴权
 * ……
 */
@Slf4j
@Component
public class MyLogGateWayFilter implements GlobalFilter, Ordered {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        log.info("***********come in MyLogGateWayFilter:  " + new Date());

        String userName = exchange.getRequest().getQueryParams().getFirst("userName");
        log.warn("userName=={}", userName);

        // 测试时解注
//        if (userName == null) {
//            log.info("*******用户名为null，非法用户，o(╥﹏╥)o");
//            exchange.getResponse().setStatusCode(HttpStatus.NOT_ACCEPTABLE);
//            return exchange.getResponse().setComplete();
//        }

        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return 0;
    }
}
